MSP430FR6047: MSP430FR6047

Felipe Garay

Other Parts Discussed in Thread: MSP430FR6047

Hi people!

I´ve used the USS library to measure water flow using MSP430FR6047 using LCD driver and TB0 interrupt to shot the measurement every second.

While using my JTAG programmer everything goes fine. But when using any other voltage source, it stacks and give me error code 253: USS_meassge_code_USSXT_oscillator_not_stable_error.

After that, it calculates a huge relative error, so, when calling USS_initAlgorithms it throws me back error code 129: USS_message_code_algorithm_error_invalid_clock_relative_error.

So, when calling USS_runAlgorithmsFixedPoint, it goes crazy, never giving an error code or getting out of API.

Anyone who can help to understand?

over 3 years ago

0 Dennis Lehman over 3 years ago

TI__Guru 71216 points

Hi Felipe,

I assume you are using the MSP430FR6047 EVM, correct? If so, did you check in the user guide to ensure you have the jumpers set correctly for using an external power source vs. the programmer?

0 Felipe Garay over 3 years ago in reply to Dennis Lehman

Prodigy 110 points

Thank you for your fast answer.

I'm not using the EVM, just the microcontroler.

0 Dennis Lehman over 3 years ago in reply to Felipe Garay

TI__Guru 71216 points

Ok, so with the JTAG programmer connected and supplying power to the MCU, everything works, but when you disconnect the JTAG programmer and provide a separate power source you see issues, correct?

Any chance you can share your schematic so I can double check everything is good? If proprietary you can send me friendship request and then you can share privately.

0 Felipe Garay over 3 years ago in reply to Dennis Lehman

Prodigy 110 points

Hi Dennis Lehman, that´s correct.
I´ve already sent you the friendship request.

0 Dennis Lehman over 3 years ago in reply to Felipe Garay

TI__Guru 71216 points

Hi Felipe,

I accepted your request so you should now be able to send me your schematic through a private message.

0 Dennis Lehman over 3 years ago in reply to Dennis Lehman

TI__Guru 71216 points

Hi Felipe,

The schematic looks fine. So when not using the JTAG programmer, what do you use for a power supply? Bench Supply? And how do you connect the external supply? Connect external 3.3V to 3.3V on the PCB and grounds?

And there is nothing else connected the MSP430 during this time, correct?

0 Felipe Garay over 3 years ago in reply to Dennis Lehman

Prodigy 110 points

That´s right.

Just the MSP430, I'm using a 3v 13400mAh battery.

Ground is connected to grounds on PCB, and power supply is connected to the PCB with its respective protection diode.

0 Dennis Lehman over 3 years ago in reply to Felipe Garay

TI__Guru 71216 points

Hi Felipe,

I'm attempting to track down someone who can help.

0 Dennis Lehman over 3 years ago in reply to Dennis Lehman

TI__Guru 71216 points

Hi Felipe,

Our USS expert is asking if the ground plane between the USSXT portion and the rest of the board are properly isolated?

The error message indicates the USSXT has not settled, possibly due to your layout. Can you share the gerber files for your PCB?

0 Dennis Lehman over 3 years ago in reply to Dennis Lehman

TI__Guru 71216 points

Hi Felipe,

I haven’t heard from you for a couple of days now, so I’m assuming you were able to resolve your issue.
I'll change the status of this posting to RESOLVED, but if this isn’t the case, please click the "This did NOT resolve my issue" button and reply to this thread with more information.
If this thread locks, please click the "Ask a related question" button and in the new thread describe the current status of your issue and any additional details you may have to assist us in helping to solve your issues.

+1 Felipe Garay over 3 years ago in reply to Dennis Lehman

Prodigy 110 points

Hi Dennis!

Thank you for your answer.

We´ve already solved the issue.

1.- First, we noticed the following warning in our project:

So we proceed to modify the linker file. The USS module writes a specific address in memory for some LEA calculations, so we defined these address' location directly.

2.- We found out that, HSPLL stabilization needs interrupts enabled to be completed. However, any other interrupt generated (external of HSPLL stabilization process) can cause the stabilization malfunctioning. So, we proceed to disable only local interrupts to avoid this.

Doing both things the issue was solved.

Thank you for your help.

Luckily it was just a Firmware issue.

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

MSP430FR6047: MSP430FR6047